101
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Qin XY, Cao C, Cawley NX, Liu TT, Yuan J, Loh YP, Cheng Y. Decreased peripheral brain-derived neurotrophic factor levels in Alzheimer's disease: a meta-analysis study (N=7277). Mol Psychiatry 2017; 22:312-320. [PMID: 27113997 DOI: 10.1038/mp.2016.62] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/10/2016] [Accepted: 03/07/2016] [Indexed: 12/30/2022]
Abstract
Studies suggest that dysfunction of brain-derived neurotrophic factor (BDNF) is a possible contributor to the pathology and symptoms of Alzheimer's disease (AD). Several studies report reduced peripheral blood levels of BDNF in AD, but findings are inconsistent. This study sought to quantitatively summarize the clinical BDNF data in patients with AD and mild cognitive impairment (MCI, a prodromal stage of AD) with a meta-analytical technique. A systematic search of Pubmed, PsycINFO and the Cochrane Library identified 29 articles for inclusion in the meta-analysis. Random-effects meta-analysis showed that patients with AD had significantly decreased baseline peripheral blood levels of BDNF compared with healthy control (HC) subjects (24 studies, Hedges' g=-0.339, 95% confidence interval (CI)=-0.572 to -0.106, P=0.004). MCI subjects showed a trend for decreased BDNF levels compared with HC subjects (14 studies, Hedges' g=-0.201, 95% CI=-0.413 to 0.010, P=0.062). No differences were found between AD and MCI subjects in BDNF levels (11 studies, Hedges' g=0.058, 95% CI=-0.120 to 0.236, P=0.522). Interestingly, the effective sizes and statistical significance improved after excluding studies with reported medication in patients (between AD and HC: 18 studies, Hedges' g=-0.492, P<0.001; between MCI and HC: 11 studies, Hedges' g=-0.339, P=0.003). These results strengthen the clinical evidence that AD or MCI is accompanied by reduced peripheral blood BDNF levels, supporting an association between the decreasing levels of BDNF and the progression of AD.
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Affiliation(s)
- X-Y Qin
- Section on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - C Cao
- Section on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - N X Cawley
- Section on Cellular Neurobiology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - T-T Liu
- Section on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - J Yuan
- Section on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Y P Loh
- Section on Cellular Neurobiology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Y Cheng
- Section on Cellular Neurobiology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
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102
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Ji XW, Wang Y, Cao C, Zhong LJ. Assessment of the link between Vitamin D receptor TaqI gene polymorphism and periodontitis: a meta-analysis in a Chinese population. Genet Mol Res 2016; 15:gmr8883. [PMID: 27808388 DOI: 10.4238/gmr.15048883] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Although a number of studies have been conducted to determine the association between vitamin D receptor (VDR) TaqI polymorphism and periodontitis in the Chinese population, this association remains elusive. To assess the influence of VDR TaqI polymorphism on the risk of periodontitis, a meta-analysis was performed in a Chinese population. Relevant studies were identified using the databases PubMed, Springer Link, Ovid, Chinese Wanfang Data Knowledge Service Platform, Chinese National Knowledge Infrastructure, and Chinese Biology Medicine, through January 2016. Pooled odds ratios and 95% confidence intervals were used to assess the strength of the associations. This meta-analysis identified 9 studies, which included 1014 periodontitis cases and 907 controls. In both overall and subgroup analyses, VDR TaqI polymorphism was not associated with the risk of periodontitis. Cumulative analysis also suggested a lack of association between VDR TaqI polymorphism and the risk of periodontitis in the Chinese population. In conclusion, our meta-analysis showed that VDR TaqI polymorphism is not associated with the risk of periodontitis in the Chinese population. Further studies in other ethnic groups are required for definite conclusions.
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Affiliation(s)
- X W Ji
- Department of Prosthodontics, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Y Wang
- Department of Prosthodontics, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - C Cao
- Department of Prosthodontics, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - L J Zhong
- Department of Prosthodontics, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China .,Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
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103
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Zhang L, Zhang P, Qi H, Wang Z, Luo T, Lu M, Ran H, Cao C, Ren J. Right ventricular function in pulmonary hypertension due to left heart disease by two-dimensional speckle tracking and real time three-dimensional echocardiography. Acta Cardiol 2016; 71:473-82. [PMID: 27594364 DOI: 10.2143/ac.71.4.3159702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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104
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Li ZW, Cai S, Liu Y, Yang CL, Tian Y, Chen G, Cao C. Over-expression of Gαi3 in human glioma is required for Akt-mTOR activation and cell growth. Oncotarget 2016. [DOI: 10.18632/oncotarget.10995] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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105
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Zhang X, Ling Y, Guo Y, Bai Y, Shi X, Gong F, Tan P, Zhang Y, Wei C, He X, Ramirez A, Liu X, Cao C, Zhong H, Xu Q, Ma RZ. Mps1 kinase regulates tumor cell viability via its novel role in mitochondria. Cell Death Dis 2016; 7:e2292. [PMID: 27383047 PMCID: PMC4973343 DOI: 10.1038/cddis.2016.193] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 06/01/2016] [Accepted: 06/03/2016] [Indexed: 12/22/2022]
Abstract
Targeting mitotic kinase monopolar spindle 1 (Mps1) for tumor therapy has been investigated for many years. Although it was suggested that Mps1 regulates cell viability through its role in spindle assembly checkpoint (SAC), the underlying mechanism remains less defined. In an endeavor to reveal the role of high levels of mitotic kinase Mps1 in the development of colon cancer, we unexpectedly found the amount of Mps1 required for cell survival far exceeds that of maintaining SAC in aneuploid cell lines. This suggests that other functions of Mps1 besides SAC are also employed to maintain cell viability. Mps1 regulates cell viability independent of its role in cytokinesis as the genetic depletion of Mps1 spanning from metaphase to cytokinesis affects neither cytokinesis nor cell viability. Furthermore, we developed a single-cycle inhibition strategy that allows disruption of Mps1 function only in mitosis. Using this strategy, we found the functions of Mps1 in mitosis are vital for cell viability as short-term treatment of mitotic colon cancer cell lines with Mps1 inhibitors is sufficient to cause cell death. Interestingly, Mps1 inhibitors synergize with microtubule depolymerizing drug in promoting polyploidization but not in tumor cell growth inhibition. Finally, we found that Mps1 can be recruited to mitochondria by binding to voltage-dependent anion channel 1 (VDAC1) via its C-terminal fragment. This interaction is essential for cell viability as Mps1 mutant defective for interaction fails to main cell viability, causing the release of cytochrome c. Meanwhile, deprivation of VDAC1 can make tumor cells refractory to loss of Mps1-induced cell death. Collectively, we conclude that inhibition of the novel mitochondrial function Mps1 is sufficient to kill tumor cells.
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Affiliation(s)
- X Zhang
- State Key Laboratory for Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Y Ling
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - Y Guo
- State Key Laboratory for Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.,Graduate School, University of the Chinese Academy of Sciences, Beijing 100149, China
| | - Y Bai
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - X Shi
- State Key Laboratory for Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.,Graduate School, University of the Chinese Academy of Sciences, Beijing 100149, China
| | - F Gong
- State Key Laboratory for Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.,Graduate School, University of the Chinese Academy of Sciences, Beijing 100149, China
| | - P Tan
- State Key Laboratory for Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Y Zhang
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - C Wei
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - X He
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - A Ramirez
- University of Colorado at Boulder, Boulder, CO 80302, USA
| | - X Liu
- University of Colorado at Boulder, Boulder, CO 80302, USA
| | - C Cao
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - H Zhong
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - Q Xu
- Beijing Institute of Biotechnology, Beijing 100850, China
| | - R Z Ma
- State Key Laboratory for Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.,Graduate School, University of the Chinese Academy of Sciences, Beijing 100149, China
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106
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Qi L, Cao C, Hu L, Chen S, Zhao X, Sun C. Metabonomic analysis of the protective effect of quercetin on the toxicity induced by mixture of organophosphate pesticides in rat urine. Hum Exp Toxicol 2016; 36:494-507. [DOI: 10.1177/0960327116652460] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The present study aims to investigate the protective effect of quercetin against the joint toxic action induced by the mixture of four organophosphate pesticides (mixture-OPs) (dimethoate, acephate, dichlorvos, and phorate) at their corresponding no observed adverse effect level (NOAEL) using metabonomics. Rats were randomly divided into control, quercetin-treated, mixture-OPs-treated, and quercetin plus mixture-OPs-treated groups. Mixture-OPs and quercetin were given to the rats daily through drinking water and intragastric administration, respectively, for 90 days. The metabonomic profiles of rat urine were analyzed using ultra-performance liquid chromatography–mass spectrometry (UPLC/MS). The 14 metabolites significantly changed in the treatment groups compared with the control group, including the biomarkers of OPs exposure (dimethylphosphate, dimethyldithiophosphate, diethylphosphate) and the metabolites of quercetin (quercetin and isorhamnetina). The intensities of gentisic acid, creatinine, suberic acid, hippuric acid, uric acid, and citric acid significantly decreased, whereas the intensities of 7-methylguanine, estrone sulfate, and cholic acid significantly increased, in the mixture-OPs-treated group compared with the control group ( p < 0.01). The variation tendency of the aforementioned metabolites was significantly ameliorated in the high-dose quercetin (50 mg/(kg bw day)) plus mixture-OPs-treated group compared with the mixture-OPs-treated group ( p < 0.05). However, the intensities of these metabolites in the high-dose quercetin plus mixture-OPs-treated group were still significantly different from those of the control group ( p < 0.05). Results indicated that high dose of quercetin elicits a partial protective effect on the toxicity induced by mixture-OPs, including fatty acid and energy metabolism, antioxidant defense system, DNA damage, and liver and kidney function.
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Affiliation(s)
- L Qi
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, Heilongjiang, China
| | - C Cao
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, Heilongjiang, China
| | - L Hu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, Heilongjiang, China
| | - S Chen
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, Heilongjiang, China
| | - X Zhao
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, Heilongjiang, China
| | - C Sun
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, Heilongjiang, China
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107
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Zhan T, Cao C, Li L, Gu N, Civin CI, Zhan X. MIM regulates the trafficking of bone marrow cells via modulating surface expression of CXCR4. Leukemia 2016; 30:1327-34. [PMID: 26965284 PMCID: PMC4889520 DOI: 10.1038/leu.2016.39] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 10/15/2015] [Accepted: 02/15/2016] [Indexed: 12/21/2022]
Abstract
Missing in metastasis (MIM) is abundantly expressed in hematopoietic cells. Here we characterized the impact of MIM deficiency on murine bone marrow (BM) cells. Although MIM-/- cells proliferated similarly to wild type (WT), they exhibited stronger response to chemokine SDF-1, increase in surface expression of CXCR4, impaired CXCR4 internalization and constitutive activation of Rac, Cdc42 and p38. Transplantation of MIM-/- BM cells into lethally irradiated mice showed enhanced homing to BM, which was abolished when mice were pretreated with a p38 antagonist. Interestingly, MIM-/- BM cells, including hematopoietic stem and progenitor cells (HSPCs), showed 2 to 5-fold increase in mobilization into the peripheral blood upon treatment with AMD3100. In vitro, MIM-/- leukocytes were susceptible to AMD3100 and maintained increased response to AMD3100 for mobilization even after transfer into wild type mice. MIM-/- mice had also a higher level of SDF-1 in the circulation. Our data highlighted an unprecedented role of MIM in the homoeostasis of BM cells, including HSPCs, through modulation of the CXCR4/SDF-1 axis and interactions of BM leukocytes with their microenvironments.
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Affiliation(s)
- T Zhan
- Department of Pathology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD, USA
| | - C Cao
- Department of Pathology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Physiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - L Li
- Department of Pathology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD, USA.,China Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, China
| | - N Gu
- China Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, China
| | - C I Civin
- Department of Pediatrics, Center for Stem Cell Biology and Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.,Departments of Pediatrics and Physiology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - X Zhan
- Department of Pathology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD, USA.,Departments of Pediatrics and Physiology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Pathology, University of Maryland School of Medicine, Baltimore, MD, USA
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108
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Zhu W, Mao Z, Zhu C, Li M, Cao C, Guan Y, Yuan J, Xie G, Guan X. Adolescent exposure to cocaine increases anxiety-like behavior and induces morphologic and neurochemical changes in the hippocampus of adult rats. Neuroscience 2015; 313:174-83. [PMID: 26621120 DOI: 10.1016/j.neuroscience.2015.11.041] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 10/24/2015] [Accepted: 11/18/2015] [Indexed: 10/22/2022]
Abstract
Repeated exposure to cocaine during adolescence may affect both physical and psychological conditions in the brain, and increase the risk of psychiatric disorders and addiction behaviors in adulthood. Adolescence represents a critical development period for the hippocampus. Moreover, different regions of the hippocampus are involved in different functions. Dorsal hippocampus (dHP) has been implicated in learning and memory, whereas ventral hippocampus (vHP) plays an important role in emotional processing. In this study, the rats that were exposed to cocaine during adolescence (postnatal days, P28-P42) showed higher anxiety-like behavior in the elevated plus maze test in adulthood (P80), but displayed normal spatial learning and memory in the Morris water maze test. Furthermore, repeated exposure to cocaine during adolescence lead to alterations in morphology of pyramidal neurons, activities of astrocytes, and levels of proteins that involved in synaptic transmission, apoptosis, inflammation and addiction in both dHP and vHP of adult rats. These findings suggest that repeated exposure to cocaine during adolescence in rats may elicit morphologic and neurochemical changes in the hippocampus when the animals reach adulthood. These changes may contribute to the increased susceptibility for psychiatric disorders and addiction seen in adults.
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Affiliation(s)
- W Zhu
- Department of Human Anatomy, Nanjing Medical University, Nanjing, China
| | - Z Mao
- Department of Human Anatomy, Nanjing Medical University, Nanjing, China
| | - C Zhu
- Department of Pharmacology, Nanjing Medical University, Nanjing, China
| | - M Li
- Department of Human Anatomy, Nanjing Medical University, Nanjing, China
| | - C Cao
- Department of Pharmacology, Nanjing Medical University, Nanjing, China
| | - Y Guan
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - J Yuan
- Department of Pharmacology, Nanjing Medical University, Nanjing, China
| | - G Xie
- Department of Human Anatomy, Nanjing Medical University, Nanjing, China
| | - X Guan
- Department of Human Anatomy, Nanjing Medical University, Nanjing, China.
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109
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Qiu Z, Cao C, Qu Y, Lu Y, Sun M, Zhang Y, Zhong J, Zeng Z. In vivo
activity of cefquinome against Riemerella anatipestifer
using the pericarditis model in the duck. J Vet Pharmacol Ther 2015; 39:299-304. [DOI: 10.1111/jvp.12271] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 09/19/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Z. Qiu
- College of Veterinary Medicine; National Reference Laboratory of Veterinary Drug Residues (SCAU); South China Agricultural University; Guangzhou China
| | - C. Cao
- College of Veterinary Medicine; National Reference Laboratory of Veterinary Drug Residues (SCAU); South China Agricultural University; Guangzhou China
| | - Y. Qu
- College of Veterinary Medicine; National Reference Laboratory of Veterinary Drug Residues (SCAU); South China Agricultural University; Guangzhou China
| | - Y. Lu
- College of Veterinary Medicine; National Reference Laboratory of Veterinary Drug Residues (SCAU); South China Agricultural University; Guangzhou China
| | - M. Sun
- College of Veterinary Medicine; National Reference Laboratory of Veterinary Drug Residues (SCAU); South China Agricultural University; Guangzhou China
| | - Y. Zhang
- College of Veterinary Medicine; National Reference Laboratory of Veterinary Drug Residues (SCAU); South China Agricultural University; Guangzhou China
| | - J. Zhong
- College of Veterinary Medicine; National Reference Laboratory of Veterinary Drug Residues (SCAU); South China Agricultural University; Guangzhou China
| | - Z. Zeng
- College of Veterinary Medicine; National Reference Laboratory of Veterinary Drug Residues (SCAU); South China Agricultural University; Guangzhou China
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110
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Shields C, Say E, Pointdujour-Lim R, Cao C, Jabbour P, Shields J. Rescue intra-arterial chemotherapy following retinoblastoma recurrence after initial intra-arterial chemotherapy. J Fr Ophtalmol 2015; 38:542-9. [DOI: 10.1016/j.jfo.2015.03.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 03/07/2015] [Accepted: 03/20/2015] [Indexed: 10/23/2022]
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111
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Bai F, Dong C, Cao C, Sun R. Investigation of cell aggregation on the substrate of a parallel-plate flow chamber. Cell Mol Biol (Noisy-le-grand) 2015; 61:86-93. [PMID: 26025409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Accepted: 05/18/2015] [Indexed: 06/04/2023]
Abstract
Adhesion of tumor cells (TCs) to polymorphonuclear neutrophils (PMNs) tethered on a monolayer of vascular endothelial cells (ECs) in shear flows is investigated theoretically. Both TC—PMN and PMN—EC aggregations are modeled using the population balance equations (PBEs). Parameters in the model obtained by curve fitting show that an increase of shear rate or viscosity will suppress the formation of aggregates and promote the breakage of them. Analysis on the collision frequency suggests that the averaged encounter duration is affected by viscosity. Based on the model, a nonlinear connection between the number of migrated TCs and the concentration of PMNs in the flow near the substrate is presented.
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Affiliation(s)
- F Bai
- Shanghai Jiao Tong University Department of Engineering Mechanics Shanghai China
| | - C Dong
- The Pennsylvania State University Department of Bioengineering USA
| | - C Cao
- Shanghai Jiao Tong University School of Life Science & Biotechnology Shanghai China
| | - R Sun
- Shanghai Jiao Tong University Department of Engineering Mechanics Shanghai China drrsun@sjtu.edu.cn
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112
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Yang B, Ming X, Cao C, Laing B, Yuan A, Porter MA, Hull-Ryde EA, Maddry J, Suto M, Janzen WP, Juliano RL. High-throughput screening identifies small molecules that enhance the pharmacological effects of oligonucleotides. Nucleic Acids Res 2015; 43:1987-96. [PMID: 25662226 PMCID: PMC4344505 DOI: 10.1093/nar/gkv060] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The therapeutic use of antisense and siRNA oligonucleotides has been constrained by the limited ability of these membrane-impermeable molecules to reach their intracellular sites of action. We sought to address this problem using small organic molecules to enhance the effects of oligonucleotides by modulating their intracellular trafficking and release from endosomes. A high-throughput screen of multiple small molecule libraries yielded several hits that markedly potentiated the actions of splice switching oligonucleotides in cell culture. These compounds also enhanced the effects of antisense and siRNA oligonucleotides. The hit compounds preferentially caused release of fluorescent oligonucleotides from late endosomes rather than other intracellular compartments. Studies in a transgenic mouse model indicated that these compounds could enhance the in vivo effects of a splice-switching oligonucleotide without causing significant toxicity. These observations suggest that selected small molecule enhancers may eventually be of value in oligonucleotide-based therapeutics.
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Affiliation(s)
- B Yang
- UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - X Ming
- UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - C Cao
- UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - B Laing
- UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - A Yuan
- UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - M A Porter
- UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - E A Hull-Ryde
- UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - J Maddry
- Southern Research Institute, Birmingham, AL 35205, USA
| | - M Suto
- Southern Research Institute, Birmingham, AL 35205, USA
| | - W P Janzen
- UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - R L Juliano
- UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
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113
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Cao C, Virk S, Liou K, Pathan F, Wilcox C, Novis E, Yan T. A systematic review and meta-analysis of clinical and cost-effective outcomes of transcatheter aortic valve implantation versus surgical aortic valve replacement. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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114
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Cao C, Tian D, Ang S, Virk S, Novis E, Wilcox C, Yan T. A meta-analysis of endoscopic versus conventional open radial artery harvesting for coronary artery bypass graft surgery. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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115
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Cao C, Virk S, Novis E, Wilcox C, Yan T. A meta-analysis of robotic versus conventional mitral valve surgery. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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116
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Virk S, Tian D, Liou K, Pathan F, Novis E, Wilcox C, Cao C. Systematic review of percutaneous coronary intervention and transcatheter aortic valve implantation for concomitant aortic stenosis and coronary artery disease. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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117
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Ma JZ, van Roekeghem A, Richard P, Liu ZH, Miao H, Zeng LK, Xu N, Shi M, Cao C, He JB, Chen GF, Sun YL, Cao GH, Wang SC, Biermann S, Qian T, Ding H. Correlation-induced self-doping in the iron-pnictide superconductor Ba2Ti2Fe2As4O. Phys Rev Lett 2014; 113:266407. [PMID: 25615365 DOI: 10.1103/physrevlett.113.266407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Indexed: 06/04/2023]
Abstract
The electronic structure of the iron-based superconductor Ba2Ti2Fe2As4O (Tc(onset)=23.5 K) has been investigated by using angle-resolved photoemission spectroscopy and combined local density approximation and dynamical mean field theory calculations. The electronic states near the Fermi level are dominated by both the Fe 3d and Ti 3d orbitals, indicating that the spacer layers separating different FeAs layers are also metallic. By counting the enclosed volumes of the Fermi surface sheets, we observe a large self-doping effect; i.e., 0.25 electrons per unit cell are transferred from the FeAs layer to the Ti2As2O layer, leaving the FeAs layer in a hole-doped state. This exotic behavior is successfully reproduced by our dynamical mean field calculations, in which the self-doping effect is attributed to the electronic correlations in the 3d shells. Our work provides an alternative route of effective doping without element substitution for iron-based superconductors.
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Affiliation(s)
- J-Z Ma
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - A van Roekeghem
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China and Centre de Physique Théorique, Ecole Polytechnique, CNRS-UMR7644, 91128 Palaiseau, France
| | - P Richard
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China and Collaborative Innovation Center of Quantum Matter, Beijing, China
| | - Z-H Liu
- Department of Physics, Renmin University, Beijing 100872, China
| | - H Miao
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - L-K Zeng
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - N Xu
- Paul Scherrer Institute, Swiss Light Source, CH-5232 Villigen PSI, Switzerland
| | - M Shi
- Paul Scherrer Institute, Swiss Light Source, CH-5232 Villigen PSI, Switzerland
| | - C Cao
- Department of Physics, Condensed Matter Physics Group, Hangzhou Normal University, Hangzhou 310036, China
| | - J-B He
- Department of Physics, Renmin University, Beijing 100872, China
| | - G-F Chen
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China and Collaborative Innovation Center of Quantum Matter, Beijing, China and Department of Physics, Renmin University, Beijing 100872, China
| | - Y-L Sun
- Department of Physics, Zhejiang University, Hangzhou 310027, China
| | - G-H Cao
- Department of Physics, Zhejiang University, Hangzhou 310027, China
| | - S-C Wang
- Department of Physics, Renmin University, Beijing 100872, China
| | - S Biermann
- Centre de Physique Théorique, Ecole Polytechnique, CNRS-UMR7644, 91128 Palaiseau, France and Collège de France, 11 place Marcelin Berthelot, 75005 Paris, France and European Theoretical Synchrotron Facility (ETSF), Europe
| | - T Qian
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - H Ding
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China and Collaborative Innovation Center of Quantum Matter, Beijing, China
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Abstract
This discussion panel aims to identify ergonomic concerns, solutions and research needs, physical stresses, and outcomes related to clinical and surgical procedures. This session will begin with formal presentations to demonstrate current ergonomic concerns and research initiatives associated with clinical and surgical procedures to frame the panel discussion for the second part of the session. Discussion of different procedures will help to identify solutions and research needs that relate to a broad range of ergonomic problems. Questions will be collected from the attendees and speakers and organized so as to guide the panel discussion and to engage all of the speakers in the discussion to achieve the symposium aims.
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Affiliation(s)
| | | | | | | | - D. Rempel
- University of California at San Francisco
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120
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Cao C, Mourier K. Quel bilan neuroradiologique devant une hémorragie sous-arachnoïdienne spontanée dont le premier bilan angiographique est normal ? Rev Neurol (Paris) 2014. [DOI: 10.1016/j.neurol.2014.01.531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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121
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Qi Y, Liu X, Dong Y, Peng Q, He Y, Sun L, Jia J, Cao C. Differential responses of short-term soil respiration dynamics to the experimental addition of nitrogen and water in the temperate semi-arid steppe of Inner Mongolia, China. J Environ Sci (China) 2014; 26:834-845. [PMID: 25079414 DOI: 10.1016/s1001-0742(13)60509-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Revised: 09/16/2013] [Accepted: 10/12/2013] [Indexed: 06/03/2023]
Abstract
We examined the effects of simulated rainfall and increasing N supply of different levels on CO2 pulse emission from typical Inner Mongolian steppe soil using the static opaque chamber technique, respectively in a dry June and a rainy August. The treatments included NH4NO3 additions at rates of 0, 5, 10, and 20 g N/(m(2)·year) with or without water. Immediately after the experimental simulated rainfall events, the CO2 effluxes in the watering plots without N addition (WCK) increased greatly and reached the maximum value at 2 hr. However, the efflux level reverted to the background level within 48 hr. The cumulative CO2 effluxes in the soil rang ed from 5.60 to 6.49 g C/m(2) over 48 hr after a single water application, thus showing an increase of approximately 148.64% and 48.36% in the effluxes during both observation periods. By contrast, the addition of different N levels without water addition did not result in a significant change in soil respiration in the short term. Two-way ANOVA showed that the effects of the interaction between water and N addition were insignificant in short-term soil CO2 effluxes in the soil. The cumulative soil CO2 fluxes of different treatments over 48 hr accounted for approximately 5.34% to 6.91% and 2.36% to 2.93% of annual C emission in both experimental periods. These results stress the need for improving the sampling frequency after rainfall in future studies to ensure more accurate evaluation of the grassland C emission contribution.
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Affiliation(s)
- Yuchun Qi
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
| | - Xinchao Liu
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yunshe Dong
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
| | - Qin Peng
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Yating He
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Liangjie Sun
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Junqiang Jia
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Congcong Cao
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of the Chinese Academy of Sciences, Beijing 100049, China
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122
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Li Y, Wu H, Niu Y, Hu Y, Li Q, Cao C, Cai J. Development of RNA aptamer-based therapeutic agents. Curr Med Chem 2014; 20:3655-63. [PMID: 23745560 DOI: 10.2174/0929867311320290011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 02/28/2013] [Accepted: 03/01/2013] [Indexed: 11/22/2022]
Abstract
RNA aptamers are non-coding small RNAs that bind to their cognate targets with high specificity and affinity. They are generally identified by iterative rounds of in vitro selection termed SELEX (Systemic Evolution of Ligands by Exponential Enrichment). Similar to antibodies, they can inhibit, modulate and disrupt the functions of target proteins effectively, making them promising therapeutic agents for the treatment of various diseases and targeted drug delivery. Herein we summarize the recent progress of RNA aptamers as potential therapeutics, and highlight a few pioneer examples in the stage of both clinical trials and pre-clinical developments.
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Affiliation(s)
- Y Li
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA
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123
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Sui W, Cao C, Che W, Chen J, Xue W, Liu P, Guo L, Dai Y. Comparative analyses of histone H3K9 trimethylations in the heart and spleen of normal humans. Genet Mol Res 2014; 13:1697-706. [PMID: 24446338 DOI: 10.4238/2014.january.14.5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The global features of trimethylations of histone 3 at lysine 9 (H3K9me3) have been well studied in recent years; however, most of these studies were performed in mammalian cell lines. In this study, we generated genome-wide maps of H3K9me3 of the human heart and spleen using chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) technology. We examined the global patterns of H3K9me3 in both tissues and found that modifications were closely associated with tissue-specific expression, function, and development. In addition, we found that 169 genes displayed significant H3K9me3 differences between the heart and spleen. Among these genes, 64 were heart-H3K9me3-specific, 87 genes were spleen-H3K9me3-specific, and 18 were shared in both heart- and spleen-H3K9me3. In conclusion, we observed significant differences in H3K9me3 in the heart and spleen, which may help to explain epigenetic differences between these tissues. Such novel findings highlight the significance of H3K9me3 as a potential biomarker or promising target for epigenetic-based disease treatment.
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Affiliation(s)
- W Sui
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - C Cao
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - W Che
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - J Chen
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - W Xue
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - P Liu
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - L Guo
- College of Life Science, Guangxi Normal University, Guilin, Guangxi, China
| | - Y Dai
- Clinical Medical Research Center, The Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, Guangdong, China
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Cao C, Luo J, Gao L, Xu G, Yi J, Huang X, Li S, Xiao J, Liu S, Xu Z. Primary Radiation Therapy Compared With Primary Surgery in Cervical Esophageal Cancer. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2013.11.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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125
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Shen J, Lei QQ, Chen X, Cao C, Cen Y. Diagnostic performance of micropthalmia transcription factor for melanoma: a systematic review and meta-analysis. Eur Rev Med Pharmacol Sci 2014; 18:798-805. [PMID: 24706302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND AND AIM The diagnosis of melanoma is still a clinical challenge, many studies reported that micropthalmia transcription factor (MITF) plays a role in diagnosing melanoma, but with considerable inconsistent results. The present work aimed to summarize the overall performance of MITF in diagnosing melanoma. METHODS A systematic literature search was performed in Pubmed and Embase for studies regarding the usefulness of MITF to diagnose melanoma. Data were retrieved and pooled sensitivity, specificity, positive and negative likelihood ratios, and diagnostic odds ratio were determined. The post-test probability was performed to evaluate clinical usefulness. A summary receiver operator characteristic curve and the area under the curve were used to summarize the overall diagnostic accuracy. RESULTS Nine studies with 1,299 subjects (651 melanomas and 648 non-melanomas) were included for present meta-analysis. The pooled sensitivity and specificity of MITF for diagnosing melanoma were 0.84 (95% CI: 0.81-0.87) and 0.96 (95% CI: 0.95-0.98), respectively. The positive likelihood ratio was 17.73 (95% CI: 10.85-28.99), negative likelihood ratio was 0.18 (95% CI: 0.10-0.32) and diagnostic odds ratio was 221.56 (95% CI: 66.16-741.96). In a setting of 20% prevalence of melanoma, the probability of melanoma would be 92% if the MITF test was positive, and the probability of melanoma would be 1% if it was negative. The area under the summary receiver operator characteristic curve was 0.99. CONCLUSIONS MITF may play a valuable role in the diagnosis of melanoma with a high specificity. Nevertheless, the results of MITF should be interpreted with the combination of other test results and clinical findings.
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Affiliation(s)
- J Shen
- Department of Plastic and Burn Surgery, West China Hospital, Sichuan University, Chengdu, China.
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126
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Cao C, Liu S, Lou SF, Liu T. The +252A/G polymorphism in the Lymphotoxin-α gene and the risk of non-Hodgkin lymphoma: a meta-analysis. Eur Rev Med Pharmacol Sci 2014; 18:544-552. [PMID: 24610621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND AND OBJECTIVES Many studies have shown that the +252A/G polymorphism in the lymphotoxin-α gene is implicated in susceptibility to non-Hodgkin lymphoma but with considerable variance of results. This study aimed to clarify the overall association between the +252A/G polymorphism in the lymphotoxin-α gene and non-Hodgkin lymphoma (NHL) risk by performing a meta-analysis. MATERIALS AND METHODS The Pubmed and Embase databases were searched for all studies relating to lymphotoxin-α +252A/G gene polymorphism and NHL risk. Data were retrieved and statistical analyses were performed using the Revman 5.1 and STATA 12.0 software. RESULTS Fourteen case-control studies with 25,098 subjects were included. There was no significant association between lymphotoxin-α +252A/G gene polymorphism and the risk of NHL in the all-combined analysis (OR = 1.08, 95%CI: 0.98-1.19 for GG+GA vs. AA; OR = 1.05, 95%CI: 0.95-1.25 for GG vs. GA+AA). In a subgroup analysis by ethnicity, increased NHL risk was found in North Americans (OR = 1.21, 95%CI: 1.05-1.39 for GG+GA vs. AA), no significant association with NHL risk was identified in Asians or Europeans; In a subgroup analysis by NHL subtype, a significantly increased risk was identified in diffuse large B cell lymphoma patients (OR = 1.20 95%CI: 1.11-1.29 for GG+GA vs. AA), but not for follicular lymphoma. CONCLUSIONS This meta-analysis suggested that the lymphotoxin-α +252A/G gene polymorphism is a risk factor for NHL in North Americans, and this polymorphism may contribute to diffuse large B cell lymphoma susceptibility. Future studies that include different types of NHL and ethnicities are needed to support and extend these observations.
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MESH Headings
- Case-Control Studies
- Chi-Square Distribution
- Genetic Predisposition to Disease
- Humans
- Lymphoma, Large B-Cell, Diffuse/ethnology
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/immunology
- Lymphoma, Non-Hodgkin/ethnology
- Lymphoma, Non-Hodgkin/genetics
- Lymphoma, Non-Hodgkin/immunology
- Lymphotoxin-alpha/genetics
- Odds Ratio
- Polymorphism, Genetic
- Risk Factors
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Affiliation(s)
- C Cao
- Department of Hematology, West China Hospital of Sichuan University and Key Laboratory of Hematology of Sichuan Province, Chengdu, China.
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127
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Yan TD, Cao C, D'Amico TA, Demmy TL, He J, Hansen H, Swanson SJ, Walker WS, Casali G, Dunning J, Shackcloth M, Shah R, Stamenkovic S, Routledge T, Walker W, Woo E, Woolley S, Baste JM, Gossot D, Roviaro G, Solaini L, Loscertales J, Gonzalez-Rivas D, Decaluwe H, Decker G, Ryck FD, Sokolow Y, Oosterhuis JW, Siebenga J, Schmid T, Bodner J, Dienemann H, Leschber G, Schneiter D, Hansen H, Licht P, Petersen RH, Piwkowski C, D'Amico T, Demmy T, Deschamps C, Howington J, Liptay M, McKenna R, Mitchell J, Meyers B, Park B, Swanson S, Lee HS, He J, Li Y, Liu Z, Wu N, Yim A, Yu W, Kohno T, Wright G, Yan TD. Video-assisted thoracoscopic surgery lobectomy at 20 years: a consensus statement. Eur J Cardiothorac Surg 2013; 45:633-9. [DOI: 10.1093/ejcts/ezt463] [Citation(s) in RCA: 156] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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128
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Du T, Yu J, Cao C. Photoelectrochemical investigation of ac modulated passive films on 304 stainless steel in weak alkaline and neutral solutions. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/000705900101501100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Liu L, Dong Z, Liang J, Cao C, Sun J, Ding Y, Wu D. As an independent prognostic factor, FAT10 promotes hepatitis B virus-related hepatocellular carcinoma progression via Akt/GSK3β pathway. Oncogene 2013; 33:909-20. [PMID: 23812429 DOI: 10.1038/onc.2013.236] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 03/29/2013] [Accepted: 04/09/2013] [Indexed: 12/14/2022]
Abstract
FAT10 is an oncogene that is localized at 6q21.3, a region frequently amplified in hepatocellular carcinoma (HCC). Recently, growing attention has been paid to its effect in the initiation of various cancers. However, there has been little research into the influence of FAT10 on the progression and prognosis of HCC, especially in hepatitis B virus (HBV)-related HCC. Here, we aimed at investigating clincopathological significance of FAT10 in HBV-related HCC and its underlying mechanisms. Based on the analysis of FAT10 expression in a reliable and large number of cases with 5-year follow-up, we showed that FAT10 was significantly increased in 260 samples from HBV-related HCC patients, compared with 30 normal tissue, 50 cirrhosis and matched adjacent nontumor tissues. FAT10 expression is correlated with recurrence and poor prognosis in HBV-related HCC. In addition, ectopic expression of FAT10 enhanced cell proliferation, inhibited apoptosis and induced cell cycle progression, whereas silencing FAT10 expression suppressed cell proliferation and induced apoptosis. FAT10 also induced the epithelial-mesenchymal transition (EMT) and promoted invasion of HCC cells. Furthermore, we found Akt/GSK3β pathway contributed to the effects of FAT10 in HCC cells. Blocking the Akt pathway significantly inhibited the actions of FAT10. Taken together, the ubiquitin-like protein FAT10 has a central role in regulating diverse aspects of the pathogenesis of HCC, indicating that it might be a potential therapeutic target.
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Affiliation(s)
- L Liu
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Z Dong
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - J Liang
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - C Cao
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - J Sun
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Y Ding
- 1] Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China [2] Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - D Wu
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Bönner G, Bakris GL, Sica D, Weber MA, White WB, Perez A, Cao C, Handley A, Kupfer S. Antihypertensive efficacy of the angiotensin receptor blocker azilsartan medoxomil compared with the angiotensin-converting enzyme inhibitor ramipril. J Hum Hypertens 2013; 27:479-86. [PMID: 23514842 PMCID: PMC3715765 DOI: 10.1038/jhh.2013.6] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Revised: 12/20/2012] [Accepted: 01/06/2013] [Indexed: 12/31/2022]
Abstract
Drug therapy often fails to control hypertension. Azilsartan medoxomil (AZL-M) is a newly developed angiotensin II receptor blocker with high efficacy and good tolerability. This double-blind, controlled, randomised trial compared its antihypertensive efficacy and safety vs the angiotensin-converting enzyme inhibitor ramipril (RAM) in patients with clinic systolic blood pressure (SBP) 150-180 mm Hg. Patients were randomised (n=884) to 20 mg AZL-M or 2.5 mg RAM once daily for 2 weeks, then force-titrated to 40 or 80 mg AZL-M or 10 mg RAM for 22 weeks. The primary endpoint was change in trough, seated, clinic SBP. Mean patient age was 57±11 years, 52.4% were male, 99.5% were Caucasian. Mean baseline BP was 161.1±7.9/94.9±9.0 mm Hg. Clinic SBP decreased by 20.6±0.95 and 21.2±0.95 mm Hg with AZL-M 40 and 80 mg vs12.2±0.95 mm Hg with RAM (P<0.001 for both AZL-M doses). Adverse events leading to discontinuation were less frequent with AZL-M 40 and 80 mg (2.4% and 3.1%, respectively) than with RAM (4.8%). These data demonstrated that treatment of stage 1-2 hypertension with AZL-M was more effective than RAM and better tolerated.
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Affiliation(s)
- G Bönner
- Park-Klinikum Bad Krozingen, Herbert-Hellmann-Allee 44, Bad Krozingen, Germany.
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131
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Indraratna P, Ang S, Cao C. TAVI versus Surgical Aortic Valve Replacement and Medical Therapy in Patients with Aortic Stenosis: Can We Afford it in Australasia? Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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132
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Juliano RL, Carver K, Cao C, Ming X. Receptors, endocytosis, and trafficking: the biological basis of targeted delivery of antisense and siRNA oligonucleotides. J Drug Target 2012; 21:27-43. [PMID: 23163768 DOI: 10.3109/1061186x.2012.740674] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The problem of targeted delivery of antisense and siRNA oligonucleotides can be resolved into two distinct aspects. The first concerns devising ligand-oligonucleotide or ligand-carrier moieties that bind with high selectivity to receptors on the cell type of interest and that are efficiently internalized by endocytosis. The second concerns releasing oligonucleotides from pharmacologically inert endomembrane compartments so that they can access RNA in the cytosol or nucleus. In this review, we will address both of these aspects. Thus, we present information on three important receptor families, the integrins, the receptor tyrosine kinases, and the G protein-coupled receptors in terms of their suitability for targeted delivery of oligonucleotides. This includes discussion of receptor abundance, internalization and trafficking pathways, and the availability of suitable high affinity ligands. We also consider the process of oligonucleotide uptake and intracellular trafficking and discuss approaches to modulating these processes in a pharmacologically productive manner. Hopefully, the basic information presented in this review will be of value to investigators involved in designing delivery approaches for oligonucleotides.
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Affiliation(s)
- R L Juliano
- Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA.
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133
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Cao C, Yu X, Liao Z, Zhu N, Huo H, Wang M, Ji G, She H, Luo Z, Yue S. Hypertonic saline reduces lipopolysaccharide-induced mouse brain edema through inhibiting aquaporin 4 expression. Crit Care 2012; 16:R186. [PMID: 23036239 PMCID: PMC3682288 DOI: 10.1186/cc11670] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Accepted: 10/04/2012] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Three percent sodium chloride (NaCl) treatment has been shown to reduce brain edema and inhibited brain aquaporin 4 (AQP4) expression in bacterial meningitis induced by Escherichia coli. Lipopolysaccharide (LPS) is the main pathogenic component of E. coli. We aimed to explore the effect of 3% NaCl in mouse brain edema induced by LPS, as well as to elucidate the potential mechanisms of action. METHODS Three percent NaCl was used to treat cerebral edema induced by LPS in mice in vivo. Brain water content, IL-1β, TNFα, immunoglobulin G (IgG), AQP4 mRNA and protein were measured in brain tissues. IL-1β, 3% NaCl and calphostin C (a specific inhibitor of protein kinase C) were used to treat the primary astrocytes in vitro. AQP4 mRNA and protein were measured in astrocytes. Differences in various groups were determined by one-way analysis of variance. RESULTS Three percent NaCl attenuated the increase of brain water content, IL-1β, TNFα, IgG, AQP4 mRNA and protein in brain tissues induced by LPS. Three percent NaCl inhibited the increase of AQP4 mRNA and protein in astrocytes induced by IL-1β in vitro. Calphostin C blocked the decrease of AQP4 mRNA and protein in astrocytes induced by 3% NaCl in vitro. CONCLUSIONS Osmotherapy with 3% NaCl ameliorated LPS-induced cerebral edema in vivo. In addition to its osmotic force, 3% NaCl exerted anti-edema effects possibly through down-regulating the expression of proinflammatory cytokines (IL-1β and TNFα) and inhibiting the expression of AQP4 induced by proinflammatory cytokines. Three percent NaCl attenuated the expression of AQP4 through activation of protein kinase C in astrocytes.
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Liu Z, Huang X, Sun L, Cao C, Yu S, Zuo L, Zhang W. 1.066 INVESTIGATION ON THE RELATIONSHIP BETWEEN ANXIETY AND THE MOTOR SYMPTOMS OR NON-MOTOR SYMPTOMS IN PATIENTS WITH PARKINSON'S DISEASE. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70180-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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135
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Gao J, Yan Z, Liu Z, Sun L, Cao C, Huang X, Zhang, L, Li B, Zhang W, Wang X, Hong JS. 3.355 MICROGLIAL NOX2: A POTENTIAL TARGET OF IRON-INDUCED DOPAMINERGIC NEURODEGENERATION. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70988-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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136
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Yan Z, Gao J, Sun L, Liu Z, Huang X, Cao C, Li B, Zhang, L, Zhang W, Wang X. 3.347 ACTIVATED MICROGLIAL FACILITATE IRON-INDUCED SELECTIVE AND PROGRESSIVE DOPAMINERGIC NEURODEGENERATION. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70980-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Cao C. 1.035 AUTONOMIC SYMPTOMS IN PATIENTS WITH PARKINSON'S DISEASE: A CLINICAL INVESTIGATION. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70149-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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138
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Cao C, Bannon P, Munkholm-Larsen S, Yan T, Ang S. Current Level IA Evidence for Radial Artery versus Saphenous Vein in Coronary Artery Bypass Graft Surgery: A Meta-analysis of Randomised Controlled Trials. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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139
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Cao C, Yan TD, Deraco M, Elias D, Glehen O, Levine EA, Moran BJ, Morris DL, Chua TC, Piso P, Sugarbaker PH. Importance of gender in diffuse malignant peritoneal mesothelioma. Ann Oncol 2011; 23:1494-8. [PMID: 22056853 DOI: 10.1093/annonc/mdr477] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Combined therapy involving cytoreductive surgery (CRS) and perioperative intraperitoneal chemotherapy has been shown to improve survival outcomes for patients with diffuse malignant peritoneal mesothelioma (DMPM). The present study aims to investigate gender as a potential prognostic factor on overall survival. PATIENTS AND METHODS Over a period of two decades, 294 patients who underwent CRS and perioperative intraperitoneal chemotherapy were selected from a large multi-institutional registry to assess the prognostic significance of gender on overall survival. RESULTS Female patients were shown to have a significantly improved survival outcome than male patients (P < 0.001). Staging according to a recently proposed tumor-node-metastasis categorization system was significant in both genders. Older female patients had significantly worse survival than younger female patients (P = 0.019), a finding that was absent in male patients. Female patients with low-stage disease were found to have a very favorable long-term outcome after combined treatment. CONCLUSIONS Gender has demonstrated a significant impact on overall survival for patients with DMPM after CRS and perioperative intraperitoneal chemotherapy. An improved understanding of the role of estrogen in the pathogenesis of DMPM may improve the prognostication of patients and determine the role of adjuvant hormonal treatment in the future.
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Affiliation(s)
- C Cao
- The Baird Institute for Applied Heart and Lung Surgical Research, Sydney
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140
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Wan X, Yang J, Xing L, Fan L, Hu B, Chen X, Cao C. Inhibition of IκB Kinase β attenuates hypoxia-induced inflammatory mediators in rat renal tubular cells. Transplant Proc 2011; 43:1503-10. [PMID: 21693225 DOI: 10.1016/j.transproceed.2011.01.179] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Accepted: 01/11/2011] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Inflammation is now believed to play a major role in the pathophysiology of ischemic acute kidney injury (AKI), which is thought to be directly regulated by nuclear factor-κB (NF-κB). Our previous study indicated that ischemic preconditioning (IPC) alleviated renal ischemic-reperfusion injury due to inhibition of IκB kinase β (IKK β) activity. Using small interfering RNA (siRNA) to silence the expression of IKKβ, which consists of the IKK complex residing at a key convergence site that leads to NF-κB activation in multiple signaling pathways, we protected organs from ischemic AKI. Herein, we have report a siRNA-based treatment to prevent ischemic AKI. METHODS Ischemic AKI was induced by a hypoxia-mimicking agent cobalt chloride (CoCl(2)). The therapeutic effects of IKKβ-specific siRNA were evaluated on the expression of interleukin (IL)-18, neutrophil gelatinase-associated lipocalin (NGAL), and cell apoptosis. RESULTS Compared with CoCl(2)-induced NRK52E cells, pretransfected IKKβ-specific siRNA reduced the expression of IL-18 and NGAL to 62.5% and 50.4% in messenger RNA (mRNA) and to 57.2% and 62.7% in protein levels, respectively. The necrosis index in the IKKβ-specific siRNA transfected group was decreased compared with a nonspecific siRNA transfected group. CONCLUSIONS These data revealed that hypoxia-induced inflammatory responses were IKKβ/NF-κB-dependent. Knockdown of IKKβ by siRNA suppressed the transcription IKKβ/NF-κB-mediated inflammatory mediators in tumor necrosis factor-α or CoCl(2)-treated tubular epithelial cells, and decreased CoCl(2)-induced cell death, which may be a useful, preventive and therapeutic strategy for ischemic AKI.
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Affiliation(s)
- X Wan
- Department of Nephrology, Nanjing First Hospital Affiliated to Nanjing Medical University, Nanjing, China
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141
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Wang H, Cao C, Zhang H, Chen X, Xiao C. Epidemiologic feature of fragment qrs complex of healthy population in Chinese community. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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142
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Li J, Wang H, Cao C, Xiao C. Analysis of 12-leads electrocardiogram of 8970 cases from community natural population. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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143
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Wang H, Cao C, Cui D, Yang L, Xiao C. Multiparameter real-time monitoring of the chronic patients outside hospital on account of long range wireless transmission technology. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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144
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Wang J, Cao C, Luo H, Xiong S, Xu Y, Xiong W. Tumour necrosis factor alpha -308G/A polymorphism and risk of the four most frequent cancers: a meta-analysis. Int J Immunogenet 2011; 38:311-20. [PMID: 21624061 DOI: 10.1111/j.1744-313x.2011.01014.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The latest data show that breast, prostate, lung and colorectal cancer are the four most frequent cancers in both sexes worldwide. A number of molecular epidemiological studies have been conducted to examine the association between TNF alpha -308G/A and the risk of those cancers. However the results have been inconclusive or inconsistent. We then performed a meta-analysis to derive a precise estimation of this association. We carried out a comprehensive search in Medline, EMBASE, OVID and Chinese Biomedical Literature Database for studies using related keywords. The inclusion criteria were (i) in English or Chinese; (ii) case-control study on this association; (iii) provide usable genotype frequencies; and (iv) sufficient published data for estimating an odds ratio (OR) with 95% confidence interval (CI). ORs and 95% CIs were calculated to assess the strength of this association under homozygote comparison (AA vs GG), heterozygote comparison (GA vs GG), dominant (AA/GA vs GG) and recessive (AA vs GA/GG) genetic model comparison. Thirty case-control studies with a total number of 16,507 cases and 19,749 controls were selected for analysis. Overall, no significant association was found between this polymorphism and the risk of total four cancers (GA vs GG: OR=1.02, 95% CI=0.91-1.14, P=0.78). However, there was a significant association between this polymorphism and breast cancer risk in western populations (GA vs GG: OR=0.91, 95% CI=0.85-0.96, P=0.002). This meta-analysis also revealed that this polymorphism was not associated with susceptibility to the other three cancers.
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Affiliation(s)
- J Wang
- Department of Respiratory Diseases, Tongji Hospital, Key Laboratory of Pulmonary Diseases of Health Ministry, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Gopalan PK, Baz MA, Zajac-Kaye M, Cao C, Gordillo-Villegas A, Zhang M, Lu L, Kaye FJ. Increased risk of neuroendocrine (NE) carcinoma in single-lung transplant survivors. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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146
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Dragicevic N, Bradshaw PC, Mamcarz M, Lin X, Wang L, Cao C, Arendash GW. Long-term electromagnetic field treatment enhances brain mitochondrial function of both Alzheimer's transgenic mice and normal mice: a mechanism for electromagnetic field-induced cognitive benefit? Neuroscience 2011; 185:135-49. [PMID: 21514369 DOI: 10.1016/j.neuroscience.2011.04.012] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2011] [Revised: 03/15/2011] [Accepted: 04/05/2011] [Indexed: 01/29/2023]
Abstract
We have recently reported that long-term exposure to high frequency electromagnetic field (EMF) treatment not only prevents or reverses cognitive impairment in Alzheimer's transgenic (Tg) mice, but also improves memory in normal mice. To elucidate the possible mechanism(s) for these EMF-induced cognitive benefits, brain mitochondrial function was evaluated in aged Tg mice and non-transgenic (NT) littermates following 1 month of daily EMF exposure. In Tg mice, EMF treatment enhanced brain mitochondrial function by 50-150% across six established measures, being greatest in cognitively-important brain areas (e.g. cerebral cortex and hippocampus). EMF treatment also increased brain mitochondrial function in normal aged mice, although the enhancement was not as robust and less widespread compared to that of Tg mice. The EMF-induced enhancement of brain mitochondrial function in Tg mice was accompanied by 5-10 fold increases in soluble Aβ1-40 within the same mitochondrial preparations. These increases in mitochondrial soluble amyloid-β peptide (Aβ) were apparently due to the ability of EMF treatment to disaggregate Aβ oligomers, which are believed to be the form of Aβ causative to mitochondrial dysfunction in Alzheimer's disease (AD). Finally, the EMF-induced mitochondrial enhancement in both Tg and normal mice occurred through non-thermal effects because brain temperatures were either stable or decreased during/after EMF treatment. These results collectively suggest that brain mitochondrial enhancement may be a primary mechanism through which EMF treatment provides cognitive benefit to both Tg and NT mice. Especially in the context that mitochondrial dysfunction is an early and prominent characteristic of Alzheimer's pathogenesis, EMF treatment could have profound value in the disease's prevention and treatment through intervention at the mitochondrial level.
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Affiliation(s)
- N Dragicevic
- Department of Cell Biology, University of South Florida, FL 33620, USA
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147
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Li H, Cao C, Zhao Y. Hydrodynamic Behaviors in Gas-Solid Two-Phase Magnetic Fluidized Beds 1. Experimental Results Represented by a Dimensionless Number. Chem Eng Technol 2011. [DOI: 10.1002/ceat.201000411] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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148
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Cao C, Krog Andvik SK, Yan TD, Kennedy C, Bannon PG, McCaughan BC. Staging of patients after extrapleural pneumonectomy for malignant pleural mesothelioma - institutional review and current update. Interact Cardiovasc Thorac Surg 2011; 12:754-7. [DOI: 10.1510/icvts.2010.262972] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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149
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Affiliation(s)
- C. Cao
- Department of Physics, Duke University, Durham, NC 27708, USA
| | - E. Elliott
- Department of Physics, Duke University, Durham, NC 27708, USA
| | - J. Joseph
- Department of Physics, Duke University, Durham, NC 27708, USA
| | - H. Wu
- Department of Physics, Duke University, Durham, NC 27708, USA
| | - J. Petricka
- Department of Physics, Gustavus Adolphus College, Saint Peter, MN 56082, USA
| | - T. Schäfer
- Department of Physics, North Carolina State University, Raleigh, NC 27695, USA
| | - J. E. Thomas
- Department of Physics, Duke University, Durham, NC 27708, USA
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Abstract
First-principles calculations are performed to study the geometry, electronic structure and magnetic properties of light non-metallic atom-doped graphene (B, N, O and F). The planar structure and the quasi-linear energy dispersion near the Dirac point remain through doping with B and N atoms, by which p-type doping and n-type doping graphene are respectively induced. A bandgap of about 0.5 eV is generated through O doping, and geometrically the O atom is also in the graphene plane. No magnetic moment is detected in B- , N- and O-doped graphene. For F doping, the F atom bonds with one of the carbon atoms close to the vacancy, with the other two carbon atoms undergoing a Jahn-Teller distortion. A weak polarized magnetic moment of 0.71 µ(B) is detected through F doping.
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Affiliation(s)
- M Wu
- International Center for New-Structured Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
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